Are there any issues I should watch out for when changing a water pump on a 1995 Z28?
Not really. Pretty simple and quick job. Just be sure to lean the mating urfaces of any gasket material. Just make sure you cover the opti-spark unit, b/c if not its going to be trouble!
My betta fish acts funny every time i change the water. he becomes lathargic and swims very jerkishly. after a few days he's okay but a couple hours after changing the water he become ill. suggestions?
Firstly, you need to be changing only part of the water at a time. Try changing a quarter at a time, so 3/4 of the old water is still in the bowl. You should be using a water ager, because things like chlorine and ammonia in the water supply could be hurting him until they evaporate out. Filtration and a larger tank often help with issues like this. Personalised advice for your individual situation can…
Should I change the water in my fish tank even if there is a bubble nest or should i change the water because its pretty dirty but i dont want to harm the bubbles or eggs HELP?
Warm, actually. Although, it is mostly a matter of opinion. If you're an enviromaniac, you should use cold water to save energy. If you want your soap to work better, you should use warm or hot water. If you have certain health issues, you should avoid prolonged exposure to hot water and, sometimes extreme cold water.
Your new Prospirit watch says that it is water resistant fifty meters If you were to go swimming for maybe two hours going no deeper than fifteen feet would this new ten dollar watch survive?
Yes......your watch will survive. Water resistance,specified at 50 meters, is based on water pressure caused by depth, not time. Fifteen feet is only about 5 meters. You could put the watch in the water for 2 days at only 15 feet and it should do just fine. You could scuba dive at 30 feet for 5 hours and the watch will survive.
It's quite likely that you have a water quality issue in your tank. You should do a water change of at least 50% making sure that the new water is the same temperature as the old water, and using the recommended dosage of water conditioner per the instructions on the bottle. You should be changing out 50% to 75% of your tank water in this way at minimum once a week.